BetaFlight V2 post-tuning workout

Although BetaFlight V2 is famous for flying great with no tuning at all, I'm never one to leave well enough alone. Maybe it's because I'm flying 3S and the defaults are tuned for 4S, but the defaults felt a little soft. With a bit more P gain, the copter tightened right up.
The Littlebee/Zeus ESCs are also amazing. I am getting aerobatic performance that I thought was out of reach of a 3S setup. I'm seriously reconsidering whether I actually need to go to 4S to have the kind of fun I like to have.